EP3132963B1 - Véhicule de travail - Google Patents

Véhicule de travail Download PDF

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Publication number
EP3132963B1
EP3132963B1 EP16193595.2A EP16193595A EP3132963B1 EP 3132963 B1 EP3132963 B1 EP 3132963B1 EP 16193595 A EP16193595 A EP 16193595A EP 3132963 B1 EP3132963 B1 EP 3132963B1
Authority
EP
European Patent Office
Prior art keywords
speed change
work vehicle
operator
grip part
grip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16193595.2A
Other languages
German (de)
English (en)
Other versions
EP3132963A3 (fr
EP3132963A2 (fr
Inventor
Motonari Inaoka
Teruhito Yamauchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Publication of EP3132963A2 publication Critical patent/EP3132963A2/fr
Publication of EP3132963A3 publication Critical patent/EP3132963A3/fr
Application granted granted Critical
Publication of EP3132963B1 publication Critical patent/EP3132963B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B71/00—Construction or arrangement of setting or adjusting mechanisms, of implement or tool drive or of power take-off; Means for protecting parts against dust, or the like; Adapting machine elements to or for agricultural purposes
    • A01B71/02—Setting or adjusting mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
    • B60K20/02—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means
    • B60K20/08—Dashboard means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B60K26/04—Arrangements or mounting of propulsion unit control devices in vehicles of means connecting initiating means or elements to propulsion unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/0278—Constructional features of the selector lever, e.g. grip parts, mounting or manufacturing
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/04—Controlling members for hand actuation by pivoting movement, e.g. levers
    • G05G1/06—Details of their grip parts
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/58—Rests or guides for relevant parts of the operator's body
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/58—Rests or guides for relevant parts of the operator's body
    • G05G1/62—Arm rests
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G9/04785—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks the controlling member being the operating part of a switch arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
    • B60K20/02—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
    • B60K2026/029—Joystick type control devices for acceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B60Y2200/221—Tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/415—Wheel loaders
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2004—Control mechanisms, e.g. control levers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/0278—Constructional features of the selector lever, e.g. grip parts, mounting or manufacturing
    • F16H2059/0282—Lever handles with lock mechanisms, e.g. for allowing selection of reverse gear or releasing lever from park position
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G2009/04774—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks with additional switches or sensors on the handle
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G9/04785—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks the controlling member being the operating part of a switch arrangement
    • G05G9/04788—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks the controlling member being the operating part of a switch arrangement comprising additional control elements

Definitions

  • the present invention relates to a work vehicle having a multifunction operation tool for controlling a work apparatus and a transmission for changing a traveling speed of the work vehicle..
  • An armrest operation device controlling a work vehicle is disclosed in U.S. Patent Application Publication No. US 2005/0133292 A1 .
  • a transmission control lever protruding upward is arranged forward of an arm resting on an armrest, and a traveling speed of the vehicle can be adjusted by gripping the transmission control lever with the fingers of the arm resting on the armrest and performing a swinging operation.
  • a button to upshift the transmission, a button to downshift the transmission, and a button (switch) to shift the transmission into a park position are arranged on a lateral surface of the transmission control lever.
  • a driver can operate the above-noted button group with the thumb of the hand gripping the transmission control lever.
  • an armrest operation device similar to that disclosed in U.S. Patent Application Publication No. US 2005/0133292 A1 is disclosed in European Patent Application Publication No. EP 2 277 736 A1 .
  • a grip operator having a shape of a mouse (such as used as an input device for computers and the like) is arranged forward of the arm resting on the armrest.
  • a surface of the grip operator is formed by combining a plurality of convex surfaces, and an outer surface of the grip operator includes a top surface forming a rest surface to rest a palm and an operation-related lateral surface on which a plurality of button groups is arranged.
  • the transmission can be upshifted/downshifted and the work apparatus can be lifted/lowered.
  • the rest surface and the operation-related lateral surface form one convex surface.
  • the thumb naturally comes into contact with the operation-related lateral surface.
  • an operator who rests a hand on the rest surface must take care not to press any unnecessary buttons. This imposes a burden on the operator and reduces an advantage of relaxing the hand by resting the hand on the rest surface.
  • JP 2012-116393 A discloses a work vehicle with speed changing capability, comprising an engine, wheels, a transmission configured to transmit power of the engine to the wheels, and a multifunction operation tool, the transmission having: main speed change units which are configured to inhibit impact generated by switching speed change stages by hydraulic control, and auxiliary speed change units which are synchromesh-type;
  • the multifunction operation tool having: a swing body swingably supported at least in a front-back direction of a vehicle body for implementing acceleration control and deceleration control; a grip body arranged on a free end portion of the swing body; a grip part formed on the grip body and having a convex surface and an upright lateral surface, the convex surface being arranged on a first lateral area of the grip body with respect to a lateral direction of the work vehicle, the upright lateral surface being arranged on a second lateral area of the grip body opposite to the first lateral area with respect to a lateral direction of the work vehicle; and an operator-facing surface arranged on the second lateral area
  • a first aspect of the present invention provides a work vehicle with speed changing capability, comprising an engine, wheels, a transmission configured to transmit power of the engine to the wheels, and a multifunction operation tool, the transmission having: main speed change units which are configured to inhibit impact generated by switching speed change stages by hydraulic control, and auxiliary speed change units which are synchromesh-type;
  • the multifunction operation tool having: a swing body swingably supported at least in a front-back direction of a vehicle body for implementing acceleration control and deceleration control; a grip body arranged on a free end portion of the swing body; a grip part formed on the grip body and having a convex surface and an upright lateral surface, the convex surface being arranged on a first lateral area of the grip body with respect to a lateral direction of the work vehicle, and the upright lateral surface being arranged on a second lateral area of the grip body opposite to the first lateral area with respect to a lateral direction of the work vehicle; and an operator-facing surface arranged on the second lateral area
  • a space defined by the upright lateral surface and the operator-facing surface is created on one side of the grip part which an operator grips with a palm, and the thumb of the hand gripping or resting on the grip part is in substantially a dangling position.
  • the thumb may move within this space with relative freedom; thus, this space is hereafter referred to as the thumb space.
  • the operation switch groups are arranged on the upright lateral surface and the operator-facing surface, a desired operation switch can be appropriately operated by only slightly moving the thumb within the thumb space. When not operating, the thumb may stand by in a natural (comfortable) position within the thumb space, thereby reducing inconvenience such as carelessly operating an operation switch.
  • the transmission has main speed change units, in which impact generated by switching speed change stages is inhibited by appropriate hydraulic control, and ordinary synchromesh-type auxiliary speed change units. Therefore, it is preferable that a speed change stage changing operation involving only the main speed change units without involving the auxiliary speed change units, and a speed change stage changing operation involving the auxiliary speed change units, are each implemented with the difference therebetween in mind of an operator. To this end, when switching speed change stages (upshifting/downshifting) via the swinging operation of the grip part about a swing axis, the speed change stage changing operation involving only the main speed change units without involving the auxiliary speed change units is enabled even without pressing the speed change auxiliary button.
  • the speed change stage changing operation involving the auxiliary speed change units is disabled when the speed change auxiliary button is not pressed.
  • the speed change stage changing operation involving the auxiliary speed change units is implemented while pressing the speed change auxiliary button.
  • the grip part is displaced forward or rearward by the palm while pressing the speed change auxiliary button with the thumb.
  • the convex surface is preferably shaped so that a palm gripping the grip part easily covers the convex surface. As a result, the palm can be fitted to the grip part and be kept stable.
  • the at least one or more operation switches are arranged on the back surface of the grip part, as well as on the convex surface.
  • the back surface is an opposite surface of the grip part with respect to the convex surface.
  • the grip body preferably includes the grip part and an extension part extending from a left side of the grip part with respect to the traveling direction of the work vehicle.
  • the grip body is more preferably formed by separately molding the grip part and the extension part and afterwards connecting the grip part and the extension part. As a result, the grip body is more easily manufactured.
  • the swing body is configured such that forward swinging movement of the swing body generates an input signal so as to accelerate the work vehicle, and rearward swinging movement of the swing body generates an input signal so as to decelerate the work vehicle.
  • This configuration gives an operator natural driving feeling.
  • the operator is generally a driver of the work vehicle to be controlled by the multifunction operation tool.
  • the basic operational function of the multifunction operation tool is accelerating the vehicle by the swing operation in the forward direction and decelerating the vehicle in the swing operation in the rearward direction.
  • Such operations are performed by swinging the palm resting on the grip part in the front-back direction (traveling direction of the vehicle).
  • the thumb of the hand resting on the grip part is in a relatively free state; thus, the operation switches arranged on the upright lateral surface and/or the operator-facing surface can be smoothly operated by the thumb.
  • the multifunction operation tool is swingably supported about a swing axis
  • the swing body is formed as an arm member that swings about the swing axis; the switching of speed change stages is executed by the grip part swinging about the swing axis.
  • Upshift is executed by displacing the grip part forward while resting the palm on the grip part.
  • Downshift is executed by displacing the grip part rearward while resting the palm on the grip part.
  • the grip part 50 is displaced forward or rearward by the palm while pressing the speed change auxiliary button 95 with the thumb.
  • the grip part has a hypothenar rest extended outwardly from a lower portion of the grip part.
  • the lower portion of the grip part is at least lower than the top surface of the convex surface.
  • the lower portion of the grip part can be a bottom portion or a middle portion of the grip part, for example.
  • the position of the lower portion from which the hypothenar rest extends outwardly is adjusted such that the palm of the hand of an operator can rest on the convex surface.
  • the hypothenar rest prevents the palm resting on the grip part from slipping downward, the grip part having a convex surface. Thus, the operator can comfortably rest the palm on the grip part for an extended period of time.
  • a protrusion width of the hypothenar rest is preferably wide enough to substantially rest a little finger. As a result, the multifunction operation tool can be prevented from becoming excessively large.
  • the grip part is configured such that the convex surface can support the palm of a hand of an operator and the hypothenar rest can support the hypothenar of the hand of the operator.
  • the operator can comfortably rest the palm on the grip part for an extended period of time.
  • the thumb of the hand resting on the grip part is in a relatively free state.
  • the operation switches arranged on the upright lateral surface can be smoothly operated by the thumb.
  • the hypothenar rest outwardly extends from at least part of the bottom fringe of the convex surface.
  • the at least one or more operation switches have at least one of (i), (ii), and (iii):
  • the thumb of the hand resting on the grip part is in a relatively free state.
  • the operation switches arranged on the operator-facing surface can be smoothly operated by the thumb.
  • operation switches which are frequently operated at the same time as, or following, the acceleration/deceleration operation of the vehicle are arranged on the upright lateral surface or the operator-facing surface.
  • the at least one or more operation switches includes a shuttle auxiliary button arranged on the upright lateral surface; and/or a shuttle button is arranged on another lateral surface of the grip body (5A).
  • shuttle auxiliary button and shuttle button are configured to enable a specific function when either one of the shuttle auxiliary button and the shuttle button is operated simultaneously with another operation switch.
  • the thumb When the palm rests on the grip part, the thumb is positioned in the thumb space defined by the upright lateral surface and the operator-facing surface, and the middle finger and the index finger are positioned on an opposite lateral surface of the grip body with respect to the upright lateral surface. For this reason, operation switches are preferably arranged on the lateral surface facing the middle finger and the index finger.
  • a joint structure mechanism of the hand which enables the thumb and the middle finger (or the index finger) to jointly and easily grip an object, can be effectively utilized.
  • the travel operation switch group further includes a shuttle permission switch which enables/disables a function of the shuttle switch and is arranged on an opposite lateral surface of the grip body with respect to the upright lateral surface.
  • a shuttle switch which switches between forward travel and reverse travel is an operation switch that is frequently operated in conjunction with the acceleration/deceleration operation of the vehicle. Further, because the shuttle switch switches between forward travel and reverse travel, which are significant changes in the state of the vehicle, the operator must operate the shuttle switch with sufficient care. In order to cause the operator to exercise such care, it is preferable that another switch is provided in addition to the shuttle switch, and switching between forward travel and reverse travel is achieved by operating both switches. Moreover, it is preferable to arrange the shuttle permission switch on the opposite lateral surface with respect to the upright lateral surface. Thereby, operation of the two switches be performed by a natural movement of the fingers of the hand resting on the grip part so as to enhance operability.
  • the shuttle permission switch is a specific function switch.
  • the thumb of the hand resting on the convex surface of the grip part can comfortably reach to and operate a switch arranged on the operator-facing surface.
  • the grip part is adjacent to the operator-facing surface, the grip part and the operator-facing surface are arranged so as to form a difference in level of top surfaces, and the upright lateral surface is arranged to connect the top surfaces of the grip part and the operator-facing surface.
  • One switch is arranged on the operator-facing surface or the upright lateral surface.
  • the other switch is arranged on the opposite lateral surface of the grip part with respect to the upright lateral surface.
  • a first reference example of the present invention provides an armrest operation device comprising any one of the multifunction operation tools above; and an armrest support base having a front area, a middle area, and a rear area oriented in a front/back direction of the vehicle body, wherein the multifunction operation tool is arranged in the front area and the middle area includes an engine control switch group and a work vehicle hydraulic control switch group.
  • a third reference example of the present invention provides a multifunction operation tool for controlling a work vehicle with speed changing capability, the multifunction operation tool comprising: a swing body portion swingably supported at least in a front-back direction of a vehicle body for implementing acceleration control and deceleration control; a grip body arranged on an upper end of the swing body portion; said grip body comprising: an upward facing convex grip surface; a vertical lateral surface; and an operator-facing surface extending to the vertical lateral surface and being angled with respect to an imaginary horizontal surface; and operation switches, wherein at least one operation switch is arranged on the vertical lateral surface and two or more operation switches are arranged on the operator-facing surface.
  • the vertical lateral surface is not necessarily exact vertical.
  • the vertical lateral surface and the convex grip surface are formed such that, while the palm of the hand of an operator rests on the convex grip surface, his thumb has comfortable access to the vertical lateral surface.
  • an integrally configured armrest support base is provided.
  • the armrest support base is divided into a front area, a middle area, and a rear area in the front/back direction of the vehicle body.
  • the multifunction operation tool is arranged in the front area
  • an armrest base is arranged in the rear area
  • an engine control switch group and a work vehicle hydraulic control switch group are arranged in the middle area.
  • burden on the arm is reduced by resting the palm (of the arm resting on the armrest base) on the grip part of the multifunction operation tool, and the multifunction operation tool can be comfortably operated using the palm, thumb, and fingers.
  • various switch groups are arranged in the middle area between the armrest base and the multifunction operation tool, thereby enabling a concentrated arrangement of the operation switch groups and reducing wiring costs.
  • Fig. 1 illustrates an armrest operation device 4 including an armrest base 40 and a multifunction operation tool 5 swingably supported about a swing axis P1.
  • the multifunction operation tool 5 is used to control a work vehicle having a work apparatus and a transmission to change traveling speed, such as a tractor and a front loader.
  • the multifunction operation tool 5 substantially includes a grip body 5A and a swing body 5B.
  • the swing body 5B is formed as an arm member that swings about the swing axis P1.
  • the present embodiment is configured such that causing the swing body 5B to swing in a first direction from a swing neutral position, in which the swing body 5B is substantially vertical, accelerates the vehicle, and causing the swing body 5B to swing in a second direction decelerates the vehicle.
  • the grip body 5A is provided on a free end side of the swing body 5B. As illustrated in Fig. 1 , the grip body 5A is configured by a grip part 50 that is formed in a right side area, here substantially a right half area, and an extension part 51 (where operation switch groups 9 are arranged) that is formed in a left side area, here substantially a left half area.
  • An outer peripheral surface of the grip body 5A is defined by a convex surface 52, a vertical lateral surface 53, a back surface 54a (see Fig. 7 ), and a bottom surface 54b (see Fig. 7 ).
  • the convex surface 52 is shaped so that a palm gripping the grip part 50 easily covers the convex surface 52.
  • the vertical lateral surface 53 is a surface which extends substantially perpendicularly with respect to a left edge of the convex surface 52.
  • a tongue piece protruding outward is formed as a hypothenar rest 55 on a bottom edge of the grip part 50, that is, on at least a portion of a boundary area between the bottom surface 54b and the convex surface 52.
  • the hypothenar rest 55 is shaped to hold the hypothenar of a hand resting on the grip part 50 so that the palm does not slip downward.
  • a top surface of the extension part 51 has a surface that is substantially flat or very slightly convex. Because in actual application the top surface of the extension part 51 is arranged so as to face an operator, the extension part 51 is hereafter also referred to as an operator-facing surface 56.
  • the operator-facing surface 56 has a shape that extends in a left direction from a bottom edge of the vertical lateral surface 53 of the grip part 50, with the grip part 50 and the extension part 51 connected and the operator-facing surface 56 and the vertical lateral surface 53 intersecting substantially perpendicular to each other.
  • a space defined by the operator-facing surface 56 and the vertical lateral surface 53 is large enough that the thumb of the hand resting on the grip part 50 can move freely to a certain extent. For this reason, this space is referred to as a thumb space TS.
  • At least one operation switch (including buttons and levers and the like) that belongs to the operation switch groups 9 is arranged on the vertical lateral surface 53 and the operator-facing surface 56.
  • the operation switch groups 9 include a travel operation switch group which changes a speed change stage in the transmission and a work operation switch group which controls the work apparatus.
  • travel operation switches that belong to the travel operation switch group and work operation switches that belong to the work operation switch group are arranged in an intermingled manner on the operator-facing surface 56.
  • Operation switches that belong to the travel operation switch group are arranged on the vertical lateral surface 53, and these operation switches are basically arranged so as to be easily operated with the thumb of the hand resting on the grip part 50.
  • Operation switches that belong to the travel operation switch group are also arranged on the back surface 54a of the grip part 50 so as to be easily operated with the middle finger or the index finger of the hand resting on the grip part 50.
  • the armrest operation device 4 includes an armrest support base 4A which serves as a mounting base.
  • the armrest support base 4A is divided into a front area, a middle area, and a rear area.
  • the multifunction operation tool 5 is provided in the front area, and the armrest base 40 on which the operator rests an arm is provided in the rear area.
  • An engine control switch group, a work vehicle hydraulic control switch group, and the like are arranged in the front area (other than the installation position of the multifunction operation tool 5) and the middle area.
  • the armrest operation device 4 is integrally mounted in an area from a side of a driver's seat of the work vehicle to a front side thereof.
  • the tractor is a four-wheel-drive vehicle in which the power of the engine 20 is transmitted to the front wheels 2a and the rear wheels 2b via a transmission mechanism for traveling built into the transmission 22. Further, the power of the engine 20 is also transmitted to the work apparatus 3 via a PTO shaft 31 that protrudes rearward from the transmission 22.
  • the engine 20 is covered by a hood 21.
  • a cabin 10 is supported by the vehicle body 1 rearward of the hood 21 and above the transmission 22.
  • An interior of the cabin 10 acts as a driving space.
  • a steering handle 11 is provided in a front portion of the driving space to steer the front wheels 2a and a driver's seat 12 is provided in a rear portion of the driving space between a left/right pair of rear wheel fenders 15.
  • the armrest operation device 4 having the multifunction operation tool 5 is provided from one side of the driver's seat 12 toward the front thereof.
  • a display 13 which visually notifies a driver of various information is provided on a front side of the armrest operation device 4.
  • the armrest operation device 4 includes the armrest support base 4A which is fixed to a mounting bracket 4B, the mounting bracket 4B being fixed to a support frame not shown in the drawings.
  • a support rod or member 4C which inclines upward while extending forward, is fixed to the mounting bracket 4B, and the display 13 (such as a liquid crystal panel and the like) is mounted on a forefront end of the support rod 4C.
  • the display 13 allows an input operation to be performed via a touch panel and can accept various operation inputs by the driver.
  • the armrest operation device 4 can be divided into a front area 4a, a middle area 4b, and a rear area 4c in a plan view.
  • the cushioned armrest base 40 on which a driver's arm rests is provided in the rear area 4c.
  • the multifunction operation tool 5 (described in detail below) is provided in substantially a left half of the front area 4a.
  • a first operation switch group 9a and a second operation switch group 9b are arranged as the operation switch groups 9.
  • a third operation switch group 9c, a fourth operation switch group 9d, and a fifth operation switch group 9e are arranged as the operation switch groups 9.
  • operation switches having various forms such as a button, a switch, a dial, a lever, and a joystick are provided.
  • Figs. 5 through 8 illustrate the multifunction operation tool 5 viewed from various directions.
  • the multifunction operation tool 5 is intended for right-hand operation.
  • the grip body 5A of the multifunction operation tool 5 is mounted to the swing body 5B that swings about the swing axis P1, the swing axis P1 extending in substantially a transverse direction of the vehicle body 1.
  • the swing body 5B is fitted into a bush part 59 formed on the bottom surface 54b of the grip body 5A.
  • a skirt 59a is formed around a periphery of a bottom end of the bush part 59.
  • the skirt 59a serves as a guide member to a swing port formed on the armrest support base 4A and also as a dust-preventing member.
  • the left lateral surface of the grip part 50 is formed into the substantially flat vertical lateral surface 53.
  • the thumb space TS which allows free movement of the thumb is created between the vertical lateral surface 53 and the substantially flat operator-facing surface 56, the operator-facing surface 56 being formed on the top surface of the extension part 51.
  • An angle between the vertical lateral surface 53 and the operator-facing surface 56 is approximately 110 degrees.
  • a twist angle of the operator-facing surface 56 with respect to the grip part 50 is defined such that the operator-facing surface 56 faces a line of vision of the driver sitting in the driver's seat 12.
  • the hypothenar rest 55 protruding in a tongue piece shape is formed from the right bottom edge of the grip part 50 to a boundary edge between the vertical lateral surface 53 and the operator-facing surface 56.
  • the protrusion width of the hypothenar rest 55 is wide enough to substantially rest a little finger.
  • the transmission 22 has six auxiliary speed change units and four main speed change units, and the main speed change units are speed change units in which impact generated by switching speed change stages is inhibited by appropriate hydraulic control. Twenty-four stages of speed changes are achieved by combining the speed change stages of the auxiliary speed change units and the main speed change units.
  • This switching of speed change stages that is, upshift and downshift, is executed by the grip part 50 swinging about the swing axis P1, and ultimately by swinging of the swing body 5B. That is, upshift is executed by displacing the grip part 50 forward while resting the palm on the grip part 50 and downshift is executed by displacing the grip part 50 rearward while resting the palm on the grip part 50.
  • a shuttle button 91 and a speed change ratio fixing button 93 that belong to a travel-related operation switch group 9, and an up/down button 92 and two hydraulic control switches 94a and 94b that belong to a work-related operation switch group 9, are provided on the operator-facing surface 56.
  • the shuttle button 91 is arranged on substantially an upper half (front half) of the operator-facing surface 56, in a position closest to the vertical lateral surface 53.
  • the up/down button 92 is arranged next to the shuttle button 91 on a left side and the speed change ratio fixing button 93 is arranged further left of the shuttle button 91.
  • the hydraulic control switches 94a and 94b are arranged side by side on substantially a lower half (front half) of the operator-facing surface 56.
  • a speed change auxiliary button 95 is arranged on the vertical lateral surface 53.
  • a shuttle auxiliary button 96 is arranged on the back surface 54a of the grip part 50. The shuttle auxiliary button 96 can be easily operated with the index finger or the middle finger of the hand whose palm is resting on the convex surface 52 of the grip part 50.
  • the shuttle button 91 switches the transmission 22 to forward travel when an upward arrow portion of the shuttle button 91 is pressed along with the shuttle auxiliary button 96, and switches the transmission 22 to reverse travel when a downward arrow portion of the shuttle button 91 is pressed along with the shuttle auxiliary button 96. That is, forward travel and reverse travel of the tractor can be selected by pressing the shuttle button 91 with the thumb while pressing the shuttle auxiliary button 96 with the middle finger or the index finger (a ring finger or the little finger is also possible).
  • the transmission 22 adopted in the present embodiment has main speed change units, in which impact generated by switching speed change stages is inhibited by appropriate hydraulic control, and ordinary synchromesh-type auxiliary speed change units. Therefore, it is preferable that a speed change stage changing operation involving four speed change stages of only the main speed change units without involving the auxiliary speed change units, and a speed change stage changing operation involving the auxiliary speed change units, are each implemented with the difference therebetween in mind.
  • the speed change stage changing operation involving only the main speed change units without involving the auxiliary speed change units is enabled even without pressing the speed change auxiliary button 95; however, the speed change stage changing operation involving the auxiliary speed change units is disabled when the speed change auxiliary button 95 is not pressed.
  • the speed change stage changing operation involving the auxiliary speed change units must be implemented while pressing the speed change auxiliary button 95. In this instance, the grip part 50 is displaced forward or rearward by the palm while pressing the speed change auxiliary button 95 with the thumb.
  • an appropriate speed change ratio according to a vehicle speed can be set by a transmission controller that controls the transmission 22.
  • the speed change ratio fixing button 93 is configured as a button that forcibly fixates the speed change ratio and can issue a command to the transmission controller to maintain the speed change ratio of the transmission 22 even when the vehicle speed decreases due to brake operation and the like.
  • the up/down button 92 is divided into an upper button and a lower button. Pressing the upper button of the up/down button 92 causes the work apparatus 3 to be lifted and pressing the lower button of the up/down button 92 causes the work apparatus 3 to be lowered.
  • the hydraulic control switches 94a and 94b control valves of hydraulic piping connected to the work apparatus 3.
  • the present invention can also be applied to various work vehicles including agricultural vehicles such as combines and rice transplanters, and construction vehicles such as front loaders and backhoes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Mechanical Control Devices (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Component Parts Of Construction Machinery (AREA)

Claims (15)

  1. Véhicule de travail à capacité de changement de vitesse, comprenant un moteur (20), des roues (2a, 2b), une transmission (22) prévue pour transmettre la puissance du moteur (20) aux roues (2a, 2b), et un outil de commande multifonctionnelle (5),
    la transmission (22) comportant :
    des unités de changement de vitesse principales prévues pour inhiber l'impact généré par commutation des étages de changement de vitesse sous commande hydraulique, et
    des unités de changement de vitesse auxiliaires de type synchroniseur ;
    l'outil de commande multifonctionnelle (5) présentant : un corps oscillant (5B) supporté de manière oscillante au moins dans la direction avant-arrière de la carrosserie du véhicule pour implémenter une commande d'accélération et une commande de décélération ;
    un corps de préhension (5A) disposé sur une partie d'extrémité libre du corps oscillant (5B) ;
    une partie de préhension (50) formée sur le corps de préhension (5A) et ayant une surface convexe (52) et une surface latérale verticale (53),
    la surface convexe (52) étant présentée sur une première zone latérale du corps de préhension (5A) par rapport à une direction latérale du véhicule de travail,
    la surface latérale verticale (53) étant présentée sur une deuxième zone latérale du corps de préhension opposée à la première zone latérale par rapport à une direction latérale du véhicule de travail ; et
    une surface orientée vers l'opérateur (56) présentée sur la deuxième zone latérale du corps de préhension (5A) et s'étendant depuis une extrémité de la surface latérale verticale (53) ; et
    un ou plusieurs commutateurs de commande disposés sur la surface latérale verticale (53) et/ou la surface orientée vers l'opérateur (56) ;
    caractérisé
    en ce qu'un bouton auxiliaire de changement de vitesse (95) est disposé sur la surface latérale verticale (53) ; et
    l'opération de changement d'étage de vitesse impliquant les unités de changement de vitesse auxiliaires est implémentée en appuyant sur le bouton auxiliaire de changement de vitesse (95).
  2. Véhicule de travail selon la revendication 1, où l'outil de commande multifonctionnelle (5) est supporté de manière oscillante autour d'un axe d'oscillation (P1), le corps oscillant (5B) est formé comme élément de bras oscillant autour de l'axe d'oscillation (P1) ;
    la commutation des étages de changement de vitesse est exécutée par la partie de préhension (50) oscillant autour de l'axe d'oscillation (P1).
  3. Véhicule de travail selon la revendication 1 ou la revendication 2, où
    l'opération de changement d'étage de vitesse n'impliquant que les unités de changement de vitesse principales sans les unités de changement de vitesse auxiliaires est activée même sans appuyer sur le bouton auxiliaire de changement de vitesse (95), et
    l'opération de changement d'étage de vitesse impliquant les unités de changement de vitesse auxiliaires est désactivée si le bouton auxiliaire de changement de vitesse (95) n'est pas soumis à pression.
  4. Véhicule de travail selon la revendication 1, la revendication 2 ou la revendication 3, où la partie de préhension (50) présente un appui hypothénaire (55) s'étendant vers l'extérieur depuis une partie inférieure de la partie de préhension (50).
  5. Véhicule de travail selon la revendication 4, où la partie de préhension (50) est prévue de telle manière que la surface convexe (52) peut supporter la paume de la main d'un opérateur et l'appui hypothénaire (55) peut supporter la zone hypothénaire de la main de l'opérateur.
  6. Véhicule de travail selon la revendication 5, où la partie de préhension (50) est en outre prévue pour que la surface latérale verticale (53) puisse contacter le pouce de la main de l'opérateur.
  7. Véhicule de travail selon l'une des revendications 4 à 6, où l'appui hypothénaire (55) s'étend vers l'extérieur depuis au moins une partie de la bordure inférieure de la surface convexe (52).
  8. Véhicule de travail selon l'une des revendications 1 à 7, où le ou les commutateurs de commande comprennent au moins un des éléments suivants :
    un commutateur de commande de conduite relié à la transmission (22) du véhicule de travail ou commandant celle-ci ;
    un commutateur de commande de travail relié à un dispositif de travail du véhicule de travail ou commandant celui-ci ; et
    au moins un commutateur de commande de conduite et au moins un commutateur de commande de travail disposés sur la surface orientée vers l'opérateur (56).
  9. Véhicule de travail selon l'une des revendications 1 à 8, où :
    le ou les commutateurs de commande comprennent un bouton va-et-vient auxiliaire (96) disposé sur la surface arrière (54a) de la partie de préhension (50) ; et/ou un bouton va-et-vient (91) est disposé sur une autre surface latérale du corps de préhension (5A),
    le bouton va-et-vient auxiliaire et le bouton va-et-vient (96, 91) étant prévus pour déclencher une fonction spécifique en cas d'activation simultanée du bouton va-et-vient auxiliaire et du bouton va-et-vient avec un autre commutateur de commande.
  10. Véhicule de travail selon l'une des revendications 1 à 9, où le ou les commutateurs de commande comprennent un groupe de commutateurs de commande de conduite comprenant :
    un bouton va-et-vient (91) commutant entre la marche avant et la marche arrière, ledit bouton va-et-vient étant disposé sur la surface orientée vers l'opérateur (56) ou la surface latérale verticale (53).
  11. Véhicule de travail selon la revendication 10, où le groupe de commutateurs de commande de conduite comprend en outre :
    un commutateur va-et-vient de permission (96) activant/désactivant une fonction du commutateur va-et-vient et disposé sur la surface arrière (54a) de la partie de préhension (50) ou sur une surface latérale opposée du corps de préhension (5A) par rapport à la surface latérale verticale (53).
  12. Véhicule de travail selon l'une des revendications 1 à 11, où la partie de préhension (50) est adjacente à la surface orientée vers l'opérateur (56) par rapport à la direction latérale de la carrosserie du véhicule.
  13. Véhicule de travail selon l'une des revendications 1 à 12, la partie de préhension (50) et la surface orientée vers l'opérateur (56) sont disposées de manière à générer une différence de niveau de surfaces supérieures.
  14. Véhicule de travail selon l'une des revendications 1 à 13, où la surface latérale verticale (53) est disposée de manière à relier les surfaces supérieures de la partie de préhension (50) et la surface orientée vers l'opérateur (56) .
  15. Véhicule de travail selon l'une des revendications 1 à 14, où
    le corps de préhension (5A) de l'outil de commande multifonctionnelle (5) est monté sur le corps oscillant (5B) prévu pour osciller autour de l'axe d'oscillation (P1), l'axe d'oscillation (P1) s'étendant dans une direction transversale de la carrosserie du véhicule (1).
EP16193595.2A 2014-07-08 2015-03-27 Véhicule de travail Active EP3132963B1 (fr)

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JP2014140589A JP6317202B2 (ja) 2014-07-08 2014-07-08 多機能操作具及びアームレスト操作装置
EP15161510.1A EP2965937B1 (fr) 2014-07-08 2015-03-27 Outil multifonction et dispositif de fonctionnement de l'accoudoir

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EP15161510.1A Division-Into EP2965937B1 (fr) 2014-07-08 2015-03-27 Outil multifonction et dispositif de fonctionnement de l'accoudoir

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EP3132963A2 EP3132963A2 (fr) 2017-02-22
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EP16193595.2A Active EP3132963B1 (fr) 2014-07-08 2015-03-27 Véhicule de travail
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Also Published As

Publication number Publication date
EP3132964B1 (fr) 2019-10-02
US20160009174A1 (en) 2016-01-14
EP3132963A3 (fr) 2017-03-29
US9315103B2 (en) 2016-04-19
EP3132964A2 (fr) 2017-02-22
EP2965937B1 (fr) 2017-06-21
JP2016016739A (ja) 2016-02-01
EP3132964A3 (fr) 2017-03-29
EP2965937A1 (fr) 2016-01-13
EP3132963A2 (fr) 2017-02-22
JP6317202B2 (ja) 2018-04-25

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